Optical member production method

Abstract

Provided is an optical member production method including: a step A of preparing a porous layer supported on a substrate; a step B of applying laser light to the porous layer to remove a partial region of the porous layer, the partial region to be removed including a plurality of discrete island-like regions; and a step C of arranging a first adhesive layer on the porous layer after the step B.

1 . An optical member production method comprising:
 preparing a porous layer supported on a substrate;   applying laser light to the porous layer to remove a partial region of the porous layer, the partial region to be removed including a plurality of discrete island-like regions; and   arranging a first adhesive layer on the porous layer after applying laser light.   
     
     
         2 . The optical member production method of  claim 1 , further comprising:
 peeling the substrate from the porous layer after arranging the first adhesive layer; and   arranging a second adhesive layer on a side of the porous layer opposite to the first adhesive layer after peeling the substrate.   
     
     
         3 . The optical member production method of  claim 1 , wherein an absorption coefficient of the substrate for the laser light is 500 cm −1  or more. 
     
     
         4 . The optical member production method of  claim 1 , wherein a light intensity distribution of the laser light is a top-hat type. 
     
     
         5 . The optical member production method of  claim 1 , wherein the laser light is UV laser light. 
     
     
         6 . The optical member production method of  claim 5 , wherein an absorption coefficient of the substrate for the UV laser light is 1,000 cm −1  or more. 
     
     
         7 . The optical member production method of  claim 1 , wherein in preparing the porous layer supported on the substrate, the porous layer is formed on a peeling layer arranged on the substrate. 
     
     
         8 . The optical member production method of  claim 7 , wherein the peeling layer contains, as a main component, a polymer free of a polar group. 
     
     
         9 . The optical member production method of  claim 7 , wherein the peeling layer is formed from a cycloolefin-based polymer. 
     
     
         10 . The optical member production method of  claim 9 , wherein the peeling layer has a thickness of 500 nm or less.